January 16, 2015 2:50 am Watch: Slapjack With Kevin Hart Jimmy Fallon and Kevin Hart compete in a high-stakes game of blackjack where the loser of each round gets smacked in the face with a giant prosthetic hand. US & World Videos 2:03 Does Shakira still believe in love following Gerard Piqué split? 1:36 O.J. Simpson's cause of death revealed 25:57 WATCH: ‘Changing Climate' highlights the Philly-area residents who are combatting climate change 2:36 Super dad makes Mario-themed obstacle course for son's birthday 4:17 How the Philadelphia Union became the sustainability champs of the MLS